Option profit calculator
Calculate profit or loss on a long or short option closed at your entered exit premium. Optionally subtract estimated broker charges.
Your option trade
One NSE option contract: one opening order and one closing order for the same quantity. Enter option premiums, rather than the underlying or strike price. Results update as you type.
The example size of 25 units is illustrative. Enter the actual lot size for your contract; lots and units per lot must be positive whole numbers.
Option profit or loss
Long position, 25 units. Before charges profit: ₹500.00.
- Total units (lots × lot size)
- 25
- Gross premium P&L
- ₹500.00
- Entry premium paid, before charges
- ₹2,500.00
- Exit premium received, before charges
- ₹3,000.00
- Charges included (no broker selected)
- ₹0.00
- P&L before charges
- ₹500.00
This is a closed-trade scenario at the entered premiums, with no prediction of future prices or executable fills. Margin, collateral, financing, AMC, account opening and subscriptions are excluded. Exercise, assignment, expiry settlement and physical delivery are outside scope. Calculations use unrounded values; displayed money is rounded to paise. Contract-note rounding may differ.
How to calculate option profit
Units = whole lots × actual contract lot size. For a long option, gross P&L = exit premium value − entry premium value. For a short option, gross P&L = entry premium value − exit premium value. Net P&L subtracts the estimated buy-and-sell charges.
Calls and puts use the same premium calculation when the position is closed before expiry. A selected broker applies its recorded options tariff: per-order floors/caps or per-lot brokerage, plus the recorded NSE statutory charges. STT uses the sell premium and stamp duty the buy premium.
Worked example
Long one lot of 25 units: buy at ₹100 premium and sell at ₹120. Entry value is ₹2,500 and exit value ₹3,000. Gross profit is ₹3,000 − ₹2,500 = ₹500 before charges. A short opened at ₹120 and bought back at ₹100 also makes ₹500 gross, with charges deducted separately.
Method references: Zerodha Varsity’s pre-expiry premium P&L explanation (new tab) and Zerodha’s short-option close explanation (new tab), read 11 October 2026. The example is arithmetic, not a trade recommendation.
Option profit calculator FAQ
Multiply whole lots by the actual contract lot size to get total units. For a long option closed before expiry, gross P&L is exit premium value minus entry premium value. For a short option, it is entry premium value minus exit premium value. A selected broker subtracts estimated round-trip charges from gross P&L.
For a position opened and closed in the same option contract before expiry, calls and puts use the same premium entry-to-exit calculation. Enter the option premium per unit, not the underlying price or strike. This calculator does not value an option from the underlying price or model expiry payoff.
A selected broker and plan add recorded NSE options brokerage, sell-premium STT, exchange charges, SEBI charges, buy-premium stamp duty and GST on applicable fees. Per-lot brokerage uses whole lots; per-order tariffs apply separately to buy and sell. Delivery sell DP, AMC, account opening, subscriptions, financing and margin costs are excluded.
No. The example lot size is illustrative. Enter the actual units per lot for the contract you trade and a positive whole number of lots. Contract lot sizes differ and can change; this calculator does not maintain a live contract-size list.
No. It estimates a trade closed at the entered premiums. Short-option premium received is not the capital required to write the option; margin, collateral and maximum loss are not calculated. Exercise, assignment, expiry settlement and physical delivery are excluded. Zero premium is a hypothetical order-price scenario, not a claim that an order can execute or an expiry calculation.